Scala/Play error Overloaded method value [tuple] cannot be applied to

Question

Scala/Play error @Overloaded method value [tuple] cannot be applied to: Please see below code

def getPropertyFromRequest(implicit request: Request[AnyContent]): (Property, Option[ObjectId], Option[ObjectId], Option[ObjectId]) = {
    val p =
      Form(tuple(
        "desc" -> text,
        "url" -> text,
        "image" -> text,
        "price" -> text,
        "sqft" -> text,
        "address2" -> text,
        "lotsize" -> text,
        "taxes" -> text,
        "status" -> optional(text),
        "maint" -> text,
        "address" -> text,
        "mls" -> text,
        "baths" -> text,
        "beds" -> text,
        "partial_baths" -> text,
        "propertyId" -> optional(text),
        "snoopId" -> optional(text),
        "year_built" -> text,
        "groupId" -> optional(text) //upon adding this, error show up
      )).bindFromRequest().fold(
          errors => {Logger.error(errors.toString())
            throw new Error("could not parse form")},
          success => success
      )

      val a = GeoCoder.create(p._11 + " " + p._6)
      val property = Property(url = p._2,
        description = p._1,
        image = p._3,
        price = parseAmount(p._4).toDouble,
        sqft = p._5,
        lotSize = p._7,
        taxes = parseAmount(p._8),
        status = PropertyStatus.ACTIVE,
        maintenance = parseAmount(p._10),
        mls = p._12,
        baths = try{p._13.toDouble}catch{case e => 0},
        beds = try{p._14.toInt}catch{case e=> 0},
        partialBaths = try{p._15.toInt}catch{case e => 0},
        address = a,
        yearBuilt = Some(p._18))

      ( property, p._16.map(new ObjectId(_)) ,p._17.map(new ObjectId(_)), p._19.map(new ObjectId(_)) )
  }

Note: This code is working correctly but upon adding groupID on tuple list, error show up. according to my research tuple is up 22max element only, but this one is up to 19 counts, so not sure whats happening.

Thanks in Advance

Answer 1

The tuple method in Forms is only overloaded for up to 18-tuple.

I don't know why Play stops at 18, it seems as arbitary as 22.

There are a couple of work arounds. Either write your own tuple methods for the larger arity tuples, or use nested mappers.